Harshita Stainless, based in Delhi, India, has built a solid reputation as a manufacturer and supplier of Stainless Steel 348 Nuts, providing top-notch fastening solutions for critical industrial needs. With a focus on corrosion- and heat-resistant stainless steel fasteners, the company produces SS 348 nuts that adhere to both Indian and international quality standards. Renowned for their durability, precision, and outstanding mechanical properties, these nuts are perfect for high-temperature and chemically aggressive environments. Thanks to cutting-edge production technology and a robust distribution network, Harshita Stainless guarantees consistent quality, customizable options, and timely delivery to industries across India and beyond.
Stainless Steel 348 nuts are a type of stabilized austenitic stainless steel fastener, primarily made up of chromium (17–20%), nickel (9–13%), and columbium (niobium) to boost intergranular corrosion resistance. They boast impressive mechanical strength, with a tensile strength of about 515 MPa and a yield strength around 205 MPa. This alloy remains stable and tough even at high temperatures, showcasing good creep and stress rupture properties. SS 348 nuts are non-magnetic when annealed, have excellent weldability, and can resist oxidation up to 870°C. Their Brinell hardness usually ranges from 150 to 200 HB.
| Element | Content (%) |
|---|---|
| Iron, Fe | 66 |
| Chromium, Cr | 18 |
| Nickel, Ni | 10 |
| Manganese, Mn | 2.0 |
| Silicon, Si | 1.0 |
| Nb + Ta | 0.8 |
| Cobalt, Co | 0.2 |
| Tantalum, Ta | 0.1 |
| Carbon, C | 0.080 |
| Phosphorous, P | 0.045 |
| Sulfur, S | 0.030 |
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 655 MPa | 95000 psi |
| Yield strength (@ strain 0.200%) | 275 MPa | 39900 psi |
| Izod impact | 120 – 160 J | 88.5 – 118 ft-lb |
| Charpy impact | 160 J | 118 ft-lb |
| Shear modulus (typical for steel) | 77.0 GPa | 11200 ksi |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break (in 50 mm) | 45% | 45% |
| Hardness, Brinell (converted from Rockwell B hardness) | 147 | 147 |
| Hardness, Knoop (converted from Rockwell B hardness) | 164 | 164 |
| Hardness, Rockwell B | 85 | 85 |
| Hardness, Vickers (converted from Rockwell B hardness) | 169 | 169 |
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Stainless steel 348 nuts are ideal for high temperature applications. Available in sizes from M6 to M36, these nuts are highly resistant to corrosion and oxidation, making them suitable for nuclear reactors and chemical devices.
The stainless steel 348 coupling nuts are designed to connect threaded rods in harsh environments. Sizes range from M6 to M36, making them ideal for applications in hot and humid environments, such as medical plants and power plants
Stainless steel 348 nylon insert nuts have nylon inserts for secure fastening. Available in sizes from M6 to M24, they offer high thermal stability and resistance, suitable for use in aerospace and industrial equipment.
Stainless steel 348 flange hex nuts for enhanced weight distribution with integrated flanges. Available in sizes from M6 to M24, these panels are used in complex applications such as furnace components and heat exchangers, providing strong support.
Heavy duty stainless steel 348 hex nuts are designed for high stress and high temperature environments. Available in sizes from M6 to M36, they are ideal for use in industrial equipment and nuclear reactors, providing exceptional strength and durability.
Stainless steel 348 square nuts provide large surface area for efficient torque application. Sizes range from M6 to M24, making it suitable for secure communications in hot environments, such as chemical applications and space applications.
Harshita Stainless delivers quality Stainless Steel 348 Nuts with consistent performance, as tested under wide-ranging tests like hardness tests, spectro analysis, PMI, and flaring tests. In addition, micro and macro tests, pitting resistance, and IGC tests confirm that the nuts are of superior quality that we deliver. We ensure complete documentation, such as commercial invoices, packing lists showing net and gross weights, box numbers, and labels besides our testing protocols. Our legalized or attested Certificate of Origin along with Third-Party Inspection Certificates ensures our uncompromising commitment to delivering exceptional products and unparalleled customer satisfaction.
Stainless Steel 348 nuts are perfect for high-temperature and high-corrosion applications, thanks to their remarkable mechanical and thermal stability. They find extensive use in the chemical and petrochemical industries, especially in heat exchangers, pressure vessels, reactors, and piping systems that operate under elevated temperatures. These nuts are also utilized in the aerospace and power generation sectors, including turbine components and exhaust systems. Their resistance to harsh conditions makes them a reliable choice for various demanding applications.
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